“Owning wireless towers may not be a particularly sexy business,” Cramer said Wednesday. “But it's perhaps the smartest, least risky way to play the tremendous explosion in mobile data usage.”

For those interested in playing this space, the “Mad Money” host suggests SBA Communications . It is the smallest of the three big tower operators in the U.S.

Investors are currently getting a great chance to buy SBAC at discount, too. SBA Communications experienced a price dip following the secondary offering related to its Mobilite acquisition, Cramer said.

“Given the need for additional antennae on towers to meet the desperate bandwidth shortage, who can blame anyone for swooping in to buy SBAC on even this meager price break, ahead of when the numbers need to be bumped and the stock refuels like the rocket ship it’s become,” he added.